Potentiometric Studies of Binary and Ternary Nickel(II) Complexes Involving Ethylenediamine-N,N´ -Diacetic Acid, Amino Acids and Peptides
Corresponding Author(s) : EMAN M. SHOUKRY
Asian Journal of Chemistry,
Vol. 15 No. 1 (2003): Vol 15 Issue 1
Abstract
The formation equilibria of binary and ternary complexes of nickel(II)
with ethylenediamine-N,N'-diacetic acid (EDDA) as primary ligand and
amino acid or peptide (HL) as secondary ligand have been investigated.
Stoichiometries and stability constants of the complexes were determined
at 25°C and 0.1 M NaNO3 ionic strength. The hydrolysis of the Ni (EDDA)
complex and the deprotonation of the amide residue in the peptide complexes
are discussed in relation to physiological conditions.
Keywords
Potentiometric
Binary
Ternary
Nickel(II)
Complexes
Amino acids
Peptides
Ethylene diamine -NN'- Diacetic acid
M. SHOUKRY, E., H. ABD EL-WAHAB, Z., & A. ALI, R. (2010). Potentiometric Studies of Binary and Ternary Nickel(II) Complexes Involving Ethylenediamine-N,N´ -Diacetic Acid, Amino Acids and Peptides . Asian Journal of Chemistry, 15(1), 5–14. Retrieved from https://asianpubs.org/index.php/ajchem/article/view/21493
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